Microwave oven



FIG. 1 is a front elevational view of the microwave oven showing our newdesign;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is a bottom view thereof.

The ornamental design for a microwave oven, as shown and described.